19 Dec
2005
19 Dec
'05
7:06 p.m.
On Mon, 19 Dec 2005 17:56:55 -0800
"Chuck Guzis" <cclist at sydex.com> wrote:
On 12/20/2005 at 12:10 AM ard at p850ug1.demon.co.uk
wrote:
I was disappointed when the XT-clone motherboard vendors stopped
including the schematic diagram in that little user guide that
always comes with a motherboard. I have kept all the user guides
I've had that included the schematic.
And the shocking thing is it's always the same schematic. You can
use that schematic to troubleshoot almost ANY XT clone motherboard
I recently bought a second-hand Philips
'upright' reel-to-reel
tape recorder, and found a schematic glued to the inside of
the case. At one time this was quite common on consumer
electronic devices I believe.
Not at all uncommon on radios and TVs using vacuum tubes
(valves). Very useful. But then early PC's sometimes included
schematics in their end-user documentation.
from a certain era. They all had the same TTL, and
usually even
placed on the board identically.
That was the era when IBM lost control of the design of the 'IBM
PC,' and had to 'invoke the PS/2' to try to grab back control of
the market.